Always ALWAYS listen for the sound a titan makes before rushing you. They apparently won't rush at the same time, you just have to keep your distance during the fight. Try to lead the normal enemies away and fight them, and also keep your ears open for a rush, and when you hear it , do your double tap left trigger or w/e to throw a batarang (it automatically goes for the titan that's about to rush, at least for me it did) and then dodge pronto. If you can make it to a dazed one without taking much (if any) damage, go and get on the back of one and attack other enemies. As long as you keep yourself aware of where all the other enemies are, you should be able to get through with not too much damage.And don't go for fancy takedowns or any sort of that, you'll become very vulnerable.
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